Determine the percentage Fe in a sample of limonite from the following data: Sample : 0.5000g ; KMnO4 used = 50.00 ml ; 1.000ml of KMnO4 is equivalent 0.005317 g Fe,FeSO4 used = 6.00 ml; 1.000ml FeSO4 is equivalent 0.009200 g FeO ( ans 44.59 %)
Q: The molar ratio of lead(II) hydroxide to water from the reaction below is 2:1 Pb(OH), + 2HCI - 2H,0…
A: • The given balanced chemical equation is, Pb(OH)2 + 2HCl → 2H2O + PbCl2 • The given…
Q: If a farmer would like to prepare 1000 kg of a mixed fertilizer with a fertilizer grade of 10-10-10…
A: Fertilizer is a generally a mixture of two or more compounds that is mixed is a certain ratio and…
Q: How many litres of chlorine gas at 640 mmHg and 25 degrees C can be produced by the reaction of 2.0…
A: Welcome to bartleby !
Q: Calculate the volume in liters of acetylene produced at 26.0°C and 715 mm Hg from 0.0725 mol CaC2…
A: Given, Temperature (T) =26 °C = 26+273 =299 K Pressure (P) = 715 mm Hg = 715760 = 0.94 atm (Note…
Q: Commercial perchloric acid (100.46 g/mol) 71% (w/w) with specific gravity of 167 was diluted by…
A: Given data w/w% of perchloric acid = 71 % molar mass of perchloric acid = 100.46 g/mole specific…
Q: You need to make 1.0 L of a bu CH3COOH and NaCH3COO answers with reasonable ratio Ka for CH3COOH =…
A:
Q: QI/Prepare 0.1N of CH,COOH in 500 mL, Specific gravity 1.05 gm/cm and percentage 99.5% ?
A: Pipette out 3 ml concentrated CH3COOH (17.4 N) in a 500 ml volumetric flask and dilute it up to the…
Q: Q: Solution of 396g of Zn(OH)2 has normality [ 4.8 eqv.\L] added to 1330ml water. What is the Vol.%?…
A: given:mass of Zn(OH)2=396gnormality =4.8 eqN/Lvolume of water = 1330 mlTo…
Q: solution, and bubbling the resulting CO2(g) product in water that is at exactly 29 °C. After the…
A: Given : Pressure of CO2 gas = 755.2 torr = 755.2/760 atm Volume of CO2 gas = 44.37 ml Temperature…
Q: Use the Mol S₂032 consumed and Mol la produced from the table above for the calculations in Table 2…
A: To determine the initial concentration of thiosulfate ion, I3- produced, persulfate ion, I- at the…
Q: The combustion of liquid ethanol (C2H5OH)(C2H5OH) produces carbon dioxide and water. After 4.63 mLmL…
A: The balanced chemical equation for the combustion of liquid ethanol can be written as follows:…
Q: determine: 1) the limiting reagent, 2) the moles of each reactant left over, and 3) volume (in L) of…
A: The decomposition of CaCO3 is CaCO3 (s) → CaO (s) + CO2 (g). The mole ratio of the equation is…
Q: In 1897 the Swedish explorer Andreé tried to reach the North Pole in a balloon. The balloon was…
A: According to ideal gas law (applying for the H2 gas), PV = nRT where P = pressure = 1 atm V =…
Q: Electrolytic manganese dioxide can be prepared from manganese carbonate ore by crushing, milling and…
A: Preparation of manganese dioxide from magnesium carbonate ore by crushing, milling and leaching the…
Q: [References] In 1897 the Swedish explorer Andreé tried to reach the North Pole in a balloon. The…
A: Given: Volume of Balloon = 4800 m3 loss of gas during filling = 20 % Temperature = 0 oC = 273.15 K…
Q: The % purity of a powdered crude sample of Na^2CO^3 containing only inert impurities is to be…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: If a bag of fertilizer were labeled as containing 35% K2O, a. What is the analysis when…
A: Since the given question is a multiple question , hence I solved first question according to rules.…
Q: 0.018 0.016 0.014+ 0.012 + 0.01 0.008 0.006 0.004 0.002 + 10 20 30 40 50 60 70 80 90 Time(min) From…
A: In chemistry, chemical kinetics deals with the kinetics of the reaction and given very useful…
Q: In the preparation of 60 mL Magnesium citrate in the laboratory, you are required to:calculate for…
A: Given, Mass of (MgCO3)4 .Mg(OH)2 .5H2O = 2.57 g Molar mass of (MgCO3)4 .Mg(OH)2 .5H2O = 485.65…
Q: Commercial perchloric acid (100.46 g/mol) 71% (w/w) with specific gravity of 1.67 was diluted by…
A: Given: %(w/w) of perchloric acid i.e. HClO4 = 71 %. Volume of HClO4 solution taken = 30.00 mL…
Q: Determire He average, excluding any trails thal fall outside 0, 0005 M of thte average, O o,…
A: Outliers in a series of a values is the one which lie outside most of the other values. For example…
Q: scribe the preparation of 150 mL of 6.00 M H3PO4 f at is 86% H3PO4 (w/w) and has the specific…
A: Given data set: Volume of H3PO4 = 150 ml Molarity of H3PO4 = 6.00 M Specific gravity= 1.71 W/w% =…
Q: Volumetric analysis of the products of combustion of an unknown hydrocarbon, measured on a dry…
A:
Q: What is the density of 47.0 wt% aqueous NaOH (FM 40.00) if 17.6 mL of the solution diluted to 1.80 L…
A: Here we have,47.0 wt% (0.47%) aqueous NaOH (FM 40.00) [47 g NaOH in 100 ml water]Volume of NaOH…
Q: In the preparation of 60 mL Magnesium citrate in the laboratory, you are required to: calculate for…
A: The volume of carbon dioxide produced during the formation of magnesium citrate from the reaction of…
Q: Acrylonitrile and water are produced from propene, ammonia, and oxygen in a 2 L vessel by the…
A: In this question, we have to find out the correct answer of given problem by the help of the…
Q: Souring of wine occurs when ethanol is converted to acetic acid by oxygen: C2H5OH(l)…
A: a. When oxygen is leaked into the wine, it reacts with ethanol forming acetic acid and water. 1…
Q: In 1897 the Swedish explorer Andreé tried to reach the North Pole in a balloon. The balloon was…
A: The balanced reaction taking place is given as, => Fe (s) + H2SO4 (aq) ------> FeSO4 (aq) + H2…
Q: FeS can be roasted in O2 to form FeO: 2FeS + 3O2 → 2FeO + 2SO2 If the slag (solid product)…
A: Extent of the reaction (0 determines how long the reaction had proceeded. The extent of reaction is…
Q: Prepared 1 M of NaCl solution in volume 100 ml, Mwt is 58.5? O 0.585 gm. O 5.85 gm. O 58.5 gm.
A: Number of moles is calculated by dividing the given mass with molecular mass.
Q: Oxyacetylene torches rely on a precise mixture of fuel (C2H2(g)) to oxygen to optimize the welding…
A:
Q: Determine the production of CO, for the classroom in the course of 0.75 hours, being the volume 185…
A: Given, Time = 0.75 hours Production of CO2 / person =0.018 m3/h Outdoor concentration = 390 ppm…
Q: The concentration of arsenic in an insectide is determined gravimetrically by precipitating…
A:
Q: Determine the percentage Fe in a sample of limonite from the following data: -Sample : 0.5000g…
A: Percentage composition simply it means amount of element present relative to total amount of…
Q: An excess of hydrochloric acid is added over 10g of marble (impure CaCO,). A reac- tion takes place…
A: a) The chemical equation is given as: CaCO3(s)+2HCl(aq)→CaCl2(aq)+H2O(l)+CO2(g) The volume of CO2…
Q: Suppose thent in a eYperime nt (67 Mb & ydrosen gas was Callected I temp of 27°C. at the pssure 771…
A: Applying gas equation PV= nRT
Q: Commercial perchloric acid (100.46 g/mol) 71% (w/w) with specific gravity of 1.67 was diluted by…
A: Given: %(w/w) of perchloric acid i.e. HClO4 = 71 %. Volume of HClO4 solution taken = 15.00 mL…
Q: BN
A: Ratio in molar mass = ( molar mass of I2 / molar mass of Br2 ) Ratio in Molar mass = ( 126gmol-1 /…
Q: racter. Oxya cetylene torches rely on a precise mixture of fuel (C,H;(9) to coxygen to optimize the…
A:
Q: What volume of CO2 is produced from 1.64 moles ofa O2 at Standard Temperature and Pressure (STP)?…
A:
Q: Commercial perchloric acid (100.46 g/mol) 71% (w/w) with specific gravity of was diluted by taking…
A: Given: %(w/w) of perchloric acid i.e. HClO4 = 71 %. Volume of HClO4 solution taken = 15.00 mL…
Q: Oxyacetylene torches rely on a precise mixture of fuel (C₂H₂(g)) to oxygen to optimize the welding…
A:
Q: Commercial perchloric acid (100.46 g/mol) 71% (w/w) with specific gravity of 1.67 was diluted by…
A: Given: %(w/w) of perchloric acid i.e. HClO4 = 71 %. Volume of HClO4 solution taken = 15.00 mL…
Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of…
A:
Q: Chalcopyrite (CuFeS2), is an important source of copper. A typical chalcopyrite ore contains about…
A: Introduction: When CuFeS2 is roasted in presence of oxygen the following reaction occurs, 2CuFeS2 +…
Q: Average AG°= 43,42 AH°= . AS°= (Note: the slope of the best fit line is equal to -AS° rather than…
A: Given data:
Q: Each part per million (ppm) concentration of CO2 in the atmosphere is the equivale global…
A: There probably is more carbon dioxide in the air now than at anytime in 3 million years A plant…
Q: How many litres of chlorine gas at 650 mm Hg and 25 degrees Celisus can be produced by the reaction…
A: Given, Reaction equation: MnO2(s) + 4HCl(aq) = MnCl2(aq) + 2H2O(l) + Cl2(g) Here, 1 mol MnO2(s)…
Q: Suppose 295 gof NO3 flows into a swamp each day. What volume of N2 would be produced each day at…
A:
Determine the percentage Fe in a sample of limonite from the following data:
Sample : 0.5000g ; KMnO4 used = 50.00 ml ; 1.000ml of KMnO4 is equivalent 0.005317 g Fe,FeSO4 used = 6.00 ml; 1.000ml FeSO4 is equivalent 0.009200 g FeO ( ans 44.59 %)
Step by step
Solved in 2 steps with 5 images
- A sample known to consist of NaOH orNaHCO3, or Na2CO3 or possible compatible mixtures of these, together with inert matter. With methyl orange, a 1.10 g sample requires 31.40 mL of HCl (of which 1.00 mL ≈ 0.0140 g CaO). With phenolphthalein, the same weight of sample requires 13.30 mL of the acid. Calculate the percentage of inert matter in the sample.An impure sample of Na3PO3 weighing 0.1 g is dissolved in 35 mL of water. A solution containing 45 mL of 3% w/v HgCl2, 30 mL of 10% w/v sodium acetate, and 10 mL of glacial acetic acid is then prepared. After digesting, filtering, and rinsing the precipitate, 0.2857 g of Hg2Cl2 is obtained. Report the purity of the original sample as % w/w Na3PO3.A sample is known to consists of NaOH, or NaHCO3 or Na2CO3 or possible compatible mixture of these, together with inert matter. With methyl orange, a 1.100 g sample requires 31.4 ml of HCl ( 1.000ml is equivalent to 0.0140 g CaO). With phenolphthalein , the same weight of the sample requires 13.3 ml of the acid. Calculate the percent inert matter in the sample? ( ans. 17.7%)
- A weight of 0.50 g was taken impure container containing sodium carbonate and bicarbonate. Dissolved in water and then crushed with hydrochloric acid (0.1 N), the burette reading game was at the endpoint of phenolphthalein of 10.5 ml and at the end point of the orange methylation point 30.1 ml. The percentage of sodium carbonate was in ................. knowing that the weights are: Na: 23, C: 12, O: 16Use the following atomic masses (in g/mol):Mg = 24.31; O = 16; Ca = 40.08; C = 12.01; Na = 23; H = 1; N = 14.01; S = 32.06; Cl = 35.45; 2.) Limestone consists chiefly of mineral calcite (CaCO3). The carbonate content of 0.5413g of powdered limestone was measured by suspending the powder in water, adding 10mL of 1.392M HCl and heating to dissolve the solid and expel CO2. The excess acid required 39.96mL of 0.1004M NaOH for complete titration to a phenolphthalein end point. Find the % wt of calcite in limestone.A 1.1324 g sample of magnetite ore was dissolved in concentrated HCl to give a solution that contained a mixture of Fe2+ and Fe3+. Nitric acid was added and the solution was boiled for a few minutes, which converted all of the iron to Fe3+. The Fe3+ was then precipitated as Fe2O3*xH2O by addition of NH3. After filtration and washing, the residue was ignited at a high temp to give 0.5394 g of pure Fe2O3. What is the percent Fe and the percent Fe3O4 in the sample?
- A 0.4852g sample of an iron ore was dissolved in acid to the 3+ state, then precipitated as Fe2O3 x H2O. The pp was filtered, washed and calcined to Fe2O3, which gave a weight of 0.2481g. Calculate the Fe % in the sample.A powdered crude sample of Na2CO3 containing only inert impurities is to be determined by reacting 225.0 mg of the crude sample to 10.0 mL of 3.00 M HCl solution, and bubbling the resulting CO2(g) product in water that is at exactly 29 °C. After the reaction has completed, the level of the liquid inside the eudiometer rests 4.30 cm above the water level in the beaker. The graduation on the eudiometer indicates that the trapped gas is 44.37 mL. The experiment was done under a barometric pressure of 755.2 torr.What is the %purity of the sample to the nearest whole number?Describe the preparation of 750 mL of 5.30 M H3PO4 from the commercial reagent that is 86% H3PO4 (w/w) and has a specific gravity of 1.71. Take ? mL the concentrated reagent and dilute to ? mL with water.
- A sample is known to consists of NaOH, or NaHCO3 or Na2CO3 or possible compatible mixture of these, together with inert matter. With methyl orange, a 1.100 g sample requires 31.4 ml of HCl (1.000ml is equivalent to 0.0140 g CaO). With phenolphthalein , the same weight of the sample requires 13.3 ml of the acid. Calculate the percent inert matter in the sampleAn ore containing Fe3O4 was analyzed by dissolving a 1.5419-g sample in concentrated HCl. HNO3 was then added to oxidize any Fe2+ to Fe3+. The Fe3+ was precipitated as Fe(OH)3 by adding NH3. The precipitate was collected by filtration and was finally heated yielding 0.8525 g of Fe2O3. Report the concentration of Fe3O4 in the sample as %(w/w). (Note: the final answer is said to be 53.4%)a 25.00 mL aliquot of vinegar was diluted to 250 mL in a volumetric flask. Titration of 50.00 mL aliquots of the diluted solution required an average of 34.88 mL of 0.09600 M NaOH. Express the acidity of the vinegar in terms of the percentage (w/v) of acetic acid (MM:60g/mol). Consider the correct significant figures of your answer and do not forget the unit.
